Cultivator shovel



March 3, 1931. E. McGLoTHLEN CULTIVAI'OR SHOVEL Filed March' 18, 1930 v ltorncy Patented Mar.- 3, 1931 UNITED' STATES EDWARD MCGLOTHLEN, or CHICAGO, iLLrnors cULTIvAToR srrovrnJ Y A Application med march is, 1936. seiai rofmasosl' This invention relates'to new and improved refinements in the construction of cultivator shovels.

An object of the invention is to construct a cultivator shovel in detachablesections so that the renewable and removable point 'of the shovel when rendered substantially useless from wear, or because of breakage, can be removed and a new one substituted therefor in a few minutes.

- Another object of the invention is to so construct a cultivator shovel of two sections that when secured by the retaining means, the point of the structure cannot become accidently loosened.

yA further object is to provide a composite sectional shovel structure wherein the shank has a peculiarly shaped extension or tang which is especially designed to cooperate with 2@ removable pointhaving a correspondingly Y shaped body portion and a suitably fashioned cutting edge. e

In the drawings:

Figure 1 is a front elevation of the complete shovel structure. f

Figure 2 is a side or edge vieW of Figure l.

Figure 3 is a detail bottom plan view (or rear elevation) of the detachable point. 39 Figure 4 is a View showing the shouldered and tang equipped Aend construction of the shovel. l

Figure 5 is a central vertical section through the structure shown in kFigure 4.

gular end extension 8 at its bottom provided withbolt holes 9 and of the edged congurav tion shown in Figure 2. The edged configuration is such that Athis tang 8 is of tapered design, that is, tapering toward the apex portion. In fact the portion joining the body part of the shank is such as to define a trans-p verse shoulder as at 10.

The blade or point is generally represented Figure 6 is a central vertical section y by the numeral 11. This is of high speed steel i v of a character which will well fulll the requirements of a product ofthis type.` The A body portion 12 is of triangular coniguration and conforms in general outlineV -iand area to the correspondingly shaped tang 8. The marginal L portions 13 are grooved and bevelled to form the primary cuttingV edges. The point 15 is inclined in a'forward and downward direction from the apex por-60 tion 16 of the body 12. The apex 16 is clisposed in close proximity to the correspond ing portion of the triangular tang 8 as shown inFigure2. c. f ,v

The point 15 de'nes a rib as at 17. The @d combined thickness of the tapered triangular parts 8 and 12 is equal to the thickness of the shank 7 thus forming a continuation of the shank which is free of obstruction and crevices for the accumulation of mud and dirt,Z The portion 12 is provided with bolt holes 18 ywhich match the bolt holes 9 and serve to accommodate the removable bolts y,19. Thus, the point is rigidly and detachably mounted 1 onv the tapered'triangular tang 8 and firmly 7 abuts the shoulder 10.

It will be observed that the tang 8isof such an area that it does not interfere with the rcl- Y atively wide cutting edges 13 and le or the undermining'rib 17 f n Y It is thought that persons skilled in the art to which the invention relates 'will be able to obtain a clearunderstanding of the invention I after considering the description in connection with the drawings. Therefore, a more lengthy description is 'regarded as unnecessary. n v

Minor changes in shape, size, and rearrangement of details coming within the field of invention claimed may be resorted to inactual practicel if desired.

I claim: Y

As a new product of manufacture, a shovel comprisingl a substantially rectangular longitudinally bowed shank portion terminating in a substantially triangular tapered tang, said tang serving to definea retaining shoul- 'der` a removablepoint detachably'bolted on saidvtang and including a body portion of triangular configuration corresponding to the shape of the tang, and L marginal cutting edge, said cutting edge being of general V- shaped configuration, the spices ofthe tang and the triangular body portion of the point 5 being disposed in close proximity and in sub.-

stantially matched relationship, the cutting edges of the point projecting beyond the marginal edges of the tang, and theA juncture of Athe cutting edges dening L forwardly and downwardly inclined rib Whose inner end eX- tends from the matched apices to thev term-i-4 nel end of said point. y

In testimony whereof I afix my signature.

EDWARD MCGLOTHLEN. 

